Got Questions? Call 888-943-4364 and talk to one of our Pet Fence Experts

Add a New Pet to Your Invisible Fence System, And Save MORE Money with our Combo Pack!Owners of Invisible Fence Brand Dog Fence Systems: You've probably seen the great reviews for the Perimeter ComputerReceiverR21 Replacement Collar. Thousands of Invisible Fence owners now enjoy using the ComputerReceiver all over the USA. The extreme popularity of this unique product has allowed Pet Fence Pros to Lower the Price even more! With our Combo Pack, you save almost $20, and get FREE SHIPPING ON TOP OF THAT! Shipping on the Training Flags alone is usually more than $10 - meaning you'll save about $30.

* The Perimeter ComputerReceiver Collar is NOT COMPATIBLE with Invisible Fence 800 Series transmitters or Shields Indoor Avoidance transmitters. The Perimeter ComputerReceiver Collar will not work with these transmitters, and is not a replacement for the Invisible Fence R21 Titanium Series dog fence collars.

The Perimeter ComputerReceiver Collar is NOT COMPATIBLE with Perimeter Brand Dog Fence Systems.

If you are unsure as to whether your system is compatible with the Perimeter ComputerReceiver Collar, please CLICK HERE to request our assistance. Be sure to include your transmitter model. We'll be happy to help.

Some Important ComputerReceiver Features:

Waterproof Collar Receivers: The craftsmanship that goes into every Perimeter brand product is so good they offer the only battery replaceable waterproof collar receivers on the market. Perimeter brand ComputerReceiver will continue to function without issue when completely submerged in water. Have a pool, pond or take your dog to the lake? This tough collar is up to the task. Invisible Fence receivers are water resistant, not waterproof.(Copied directly from the Invisible Fence R21 Computer Collar Manual)

Tough Polycarbonate Collar Receiver Housing: Polycarbonate plastic is a lightweight, high performance plastic which possesses a unique balance of toughness and dimensional stability. Perimeter brand dog fence collars use polycarbonate plastic to make them resistant to damage from dog chews. Polycarbonate is frequently used in situations where safety and performance are a must such as external jet aircraft parts, the space shuttle and many military applications. Why trust the safety of your dog to anything less?

Closer Spacing Between Contact Posts: Small dogs and cats have smaller necks. It is common for Invisible Fence brand R21 posts to be spaced too far apart, causing skin irritation and poor contact. Using Invisible Fence "cat post" attachments is a hassle and can sometimes irritate skin even more. Perimeter brand pet fence collars have posts which are spaced 7/16" closer together, providing a better fit and significantly decreasing the possibility of pressure sores or skin irritation. Safer and more comfortable for all pets, especially little ones.

Seamless Warning Tone (Anti-Linger): Perimeter brand ComputerReceivers avoid excessive battery drain from those dogs smart enough to sit in the warning area until the battery is dead. Perimeter software seamlessly moves your dog from a warning tone to a very low level of correction 1 second after entering the warning tone area. This function helps to avoid premature battery drain and to emphasize the importance of the dog fence boundary. Allowing your dog to spend excessive amounts of time in the warning tone area will condition them to not take the pet fence as seriously as they should. Additional time in the warning area will promote testing the fence more frequently, resulting in shorter battery life.

Invisible Fence brand Transmitter Frequency Selection Switch

As America's Number One Supplier of high quality dog fence products, the Pet Fence Pros at PetStuffWarehouse.com know you wouldn't put your pet's safety in the hands of just anyone. That's why we trust Perimeter products, designed and manufactured in the U.S.A. by people who love their pets, just like you. Perimeter is a team that you can trust, too. As a matter of fact, they're some of the same people that created Invisible Fence, the first pet fence brand, in 1976 and continue to design some of the safest and most innovative pet fencing products available today.

Product Reviews

What a deal!

Roslyn T.(St. Louis)4/8/2010 10:48 PM

I almost paid my local dealer $350 for a new IF collar for our puppy, plus $75 more to 'set it up'? and put flags in my yard. Found this and ordered it at midnight on a Tuesday, got it on Friday. That's fast! The collar is smaller than my other one and thats great for my new dog which only weighs 13lbs. It worked perfectly right out of the box and the customer service (Gretchen!) was great when I called about placing the flags. All in all, a great quality package for a really good deal, even free shipping. I like it being made in the USA too!

Pet Stuff Warehouse dog supplies is your source for electronic dog fences and pet fences. We offer both Perimeter and Petsafe underground pet fences and Petsafe wireless dog fences. The expensive and somewhat ugly chain link dog fences have fallen by the wayside in favor of the new, better electronic dog fences. We feature only the premier manufacturers of electronic pet products: Perimeter, Petsafe, and Innotek. If you are looking for a dog fence system we have the best. Our dog fences can be buried underground or placed on top of the ground with specialized ground staples. The new WiFi Wireless dog fence - It's not wireless, it's Wifi. The wifi dog fence system is the newest technological advancement in the industry, better than the old Petsafe Instant Fence wireless pet fencing system. These new dog containment fences and cat containment systems have shown themselves to be not only effective for pet containment but safe and humane as well. Pioneered by Invisible Fence Company, underground electric dog fence products have evolved over the past 30 years to include advanced pet containment systems like Pet Stop, , Dog Guard, Contain-a-Pet, and Petsafe Pro. At Pet Stuff Warehouse we carry replacement dog fence nylon collars, collar probes and contact posts, and dog fence batteries for all premium brands like Invisible Fence. Our dog fence battery selection is the most complete anywhere, with pet fence batteries to fit most pet containment fence systems. The new Comfort Contacts from Perimeter also fit Invisible Fence, Innotek, Smart Dog, and Petsafe dog fencing collars. We also carry a large number of dog training shock collars from companies like Tritronics, Petsafe, and Numaxes. These training collars do not shock a dog but instead provide a safe static correction. In addition to pet training shock collars, we also offer dog bark collars. As with the training collars, bark collars do not shock but also offer a safe static correction. When you purchase your Perimeter dog fences, Petsafe dog fence, or Tritronics shock collar, feel assured that you have the best. Pet Stuff Warehouse has been eBay's leader in safe and effective electric pet products for the past six years with our eBay store Pet Fence Pros. We offer more containment dog fences, dog containment systems, and dog fence installation products for your pet than any other online pet supplies retailer. If you need a pet fence, we have it. All fences, training collars, bark collars, and shock collars use radio signals as opposed to ugly chain link. Remember no shock, just a static correction. The fact that there is no shock is important. Some feel that there is a shock or a strong shock, but this is not the case. On a dog fence, bark collar, or dog fences and training systems you can adjust the level of shock (static stim) correction.